Miniature Finger Gyro Boomerang

ABSTRACT

The present invention relates to a miniature finger gyro boomerang, comprising a main body casing, a propeller being arranged in the main body casing, and a shaft being arranged in the center of the propeller. Both ends of the shaft are penetrated with a finger pressing top bracket and a finger pressing bottom bracket, and the finger pressing top bracket and the finger pressing bottom bracket are respectively disposed on the top and the bottom sides of the main body casing. A drive component, a main control board and a power supply are provided in the main body casing, the power supply is electrically connected to the main control board, the main control board is electrically connected to the drive component, a motor cover of the drive component is linked with the main body casing, and the driving motor shaft is drivingly connected to the propeller. The miniature finger gyro boomerang can be used as an ordinary electric finger gyro or as a small aircraft, can be played diversely, solves the problem of the single game play of the traditional fingertip gyro or aircraft, and is beneficial to promotion.

BACKGROUND OF THE INVENTION

The present invention relates to the technical field of toy aircrafts, in particular to a miniature finger gyro boomerang.

With the increasing emphasis on intelligent life, various related technologies of aerodynamic aircrafts have been widely used in the field of toys, various types of intelligent flying toys are created. In the prior art, the toy aircrafts on the market have the disadvantage of insufficient playability, which has limited the promotion of toy aircrafts.

BRIEF SUMMARY OF THE INVENTION

In order to solve the above-mentioned problems, the present invention provides a miniature finger gyro boomerang with strong interaction and playability, which is easy to carry.

In order to achieve the above object, the present invention adopts the following technical solution: a miniature finger gyro boomerang, comprising a main body casing, a propeller is arranged in the main body casing, a shaft is arranged in the center of the propeller, both ends of the shaft are penetrated with a finger pressing top bracket and a finger pressing bottom bracket, the finger pressing top bracket and the finger pressing bottom bracket are respectively arranged on the top and bottom sides of the main body casing, a drive component, a main control board and a power supply are provided in the main body casing, the power supply is electrically connected to the main control board, the main control board is electrically connected to the drive component, the drive component is linked to the main body casing, and the driving motor shaft is drivingly connected to the propeller.

The drive component includes a motor, a motor gear connected to a motor shaft, and a transmission gear matched with the motor gear. The upper part of the main body casing is provided with a motor house, and the main control board, the power supply and the drive component are all disposed in the motor house, and a motor cover which covers the motor house is further included

After turning on the power switch, the player pinches the finger pressing top bracket and the finger pressing bottom bracket with fingers, and pulls the main body casing with the other hand to rotate. The gyroscope detects the start signal, and the MCU sends a command to start the motor, driving the main body casing to rotate relative to the propeller. The boomerang is thrown out manually. At the same time, different throwing angles can be used to obtain different flying experiences. By using a game such as a frisbee, the boomerang can automatically rotate and can be automatically recovered after being thrown. When the boomerang is started, the motor rotor is linked with the propeller through the reduction gear, and the motor and the main body are installed together. The movement of the propeller and the main body is reversed. Assuming that the propeller rotates clockwise, the main body casing rotates counterclockwise, the torques generated by the both are opposite and cancel each other out, and the relative rotation of the main body casing and the propeller generates wind in the same direction, thereby causing the boomerang to generate power. The use of a single motor as power effectively reduces product costs.

The finger pressing top bracket, the finger pressing bottom bracket, the top side of the main body casing, the bottom side of the main body casing, and the propeller are assembled on the same shaft, and the shaft is used as the center of rotation during operation.

The motor is fixed on the main body casing, the motor gear is arranged on the output shaft of the motor, the motor gear is engaged with the transmission gear, and the transmission gear is connected with the propeller.

The longitudinal main skeleton of the main body casing is made into a propeller shape.

The propeller shape made by the longitudinal main skeleton of the main body casing is opposite to the propeller direction.

The main control board is provided inside the finger pressing top bracket, and the main control board integrates an MCU main control chip, a gyroscope, and an air pressure sensor.

A method for controlling the flight trajectory of a miniature finger gyro boomerang, the power is turned on to start the miniature finger gyro boomerang to stand by. The main body casing is rotated. The MCU main control chip detects the angular velocity change signal sent by the gyroscope. The MCU main control chip sends a command to start the motor; the main body casing and the propeller rotate in opposite directions, generating wind in the same direction as the flying power of the boomerang, and at the same time, the gyro effect generated when the main body casing rotates at high speed keeps the boomerang balanced at an angle; when the boomerang is thrown at a certain angle, the boomerang first flies a distance in the direction of the throw under the action of the external force. After the throwing external force disappears, the angle of the boomerang remains unchanged due to the gyro effect of the high-speed rotation of the main body casing, and the boomerang will continue to fly in this direction, that is, the operator can set the thrown angle of the boomerang in advance to get different flight trajectories. During the flight, the MCU will automatically adjust the speed of the boomerang to maintain the stability of the flight by detecting the values of the gyroscope and the air pressure sensor. When the main body of the boomerang is impacted, the angular velocity changes, and the MCU sends a stop signal when detecting the relevant signal.

The beneficial effects of the present invention are: the miniature finger gyro boomerang has a simple structure, can be used as an ordinary electric finger gyro or as a small aircraft, can be played diversely, solves the problem of the single game play of the traditional fingertip gyro or aircraft, and is beneficial to promotion. The single motor is used as the power source, which effectively reduces product costs. The boomerang is compact in overall structure and easy to carry. The miniature finger gyro boomerang can rotate in the air by the mechanical structure. The player's gestures of throwing achieve different flight trajectories, and the player can easily obtain the effect of automatic flight rotation, thereby greatly improving the interactivity and playability of the product. At the same time, the playability is improved, the control optimization is simple and the interaction is enhanced.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a bottom view of the present invention.

FIG. 2 is an exploded structural view of the present invention.

FIGS. 3a and 3b are schematic diagrams of flight actions of the present invention.

DESCRIPTION OF SYMBOLS

1. Main body casing; 11. Top casing; 111. Motor house; 12. Bottom casing; 21. Finger pressing top bracket; 22. Finger pressing bottom bracket; 3. Propeller; 4. Drive component; 5. Motor cover; 42. Motor; 43. Motor gear; 44. Transmission gear; 6. Main control board; 7. Power supply; 8. Shaft.

DETAILED DESCRIPTION OF THE INVENTION

Please refer to FIGS. 1-2. This embodiment relates to a miniature finger gyro boomerang, which includes a main body casing 1, a finger pressing top bracket 21, a finger pressing bottom bracket 22, a drive component 4, a propeller 3, a shaft 8, a motor cover 5, a main control board 6 and a power supply 7. The shaft 8 passes through the main body casing 1, the finger pressing top bracket 21, the finger pressing bottom bracket 22 and the center hole of the propeller 3. The finger pressing top bracket 21 is provided at the lower end of the main body casing 1, the finger pressing bottom bracket 22 is provided at the upper end of the main body casing 1, and the shaft 8 passes through the finger pressing top bracket 21, the main body casing 1, the propeller 3, and the finger pressing bottom bracket 22 to fix the main body casing 1, the finger pressing top bracket 21, the finger pressing bottom bracket 22 and the propeller 3 in series, and the finger pressing bottom bracket 22 is further fixed, so that certain anti-collision function is achieved for the ascent operation of the boomerang. The drive component 4, the main control board 6 and the power supply 7 are all provided in the main body casing 1. The drive component 4 is linked to the main body casing 1. The drive component 4 is drivingly connected to the propeller 3. The drive component 4 is electrically connected to the power supply 7, and the motor shaft of the drive component 4 is linked to the propeller 3. At the time of starting, the main body casing 1, the finger pressing top bracket 21, the finger pressing bottom bracket 22, and the propeller 3 rotate about the shaft 8 as a circle center.

Further, the upper part of the main body casing 1 is provided with a motor house 111, and the main control board 6, the drive component 4 and the power supply 7 are provided in the motor house 111 of the main body casing 1, and a motor cover 5 which covers the motor house 111 is further included. The power supply 7 is electrically connected to the main control board 6. An MCU main control chip, a gyroscope and an air pressure sensor are integrated on the main control board 6. The main control board 6 is electrically connected to the driving component 4.

Further, the main body casing 1 includes a top casing 11 and a bottom casing 12, a clamping block is provided on a peripheral edge of the upper casing 11, a clamping hole is provided on a peripheral edge of the bottom casing 12, and the top casing 11 is detachably connected to the bottom casing 12 by engagement of the clamping block and the clamping hole. The motor house 111 is provided on the upper part of the top casing 11, and the longitudinal main bones of the top casing 11 and the bottom casing 12 are propeller-like structures, and the propeller shape of the longitudinal main skeleton of the main body casing 1 is opposite to the direction of the propeller 3. The propeller 3 is disposed between the top casing 11 and the bottom casing 12, and the propeller 3 and the main body casing 1 simultaneously generate wind in the same direction when rotating.

Preferably, the main control board 6 is provided with an MCU main control chip, a gyroscope and an air pressure sensor, and the MCU main control chip is electrically connected with an attitude sensor, the gyroscope and an air pressure sensor respectively.

Preferably, the drive component 4 includes a motor cover 5, a motor 42, a motor gear 43 and a transmission gear 44, the motor cover 5 is connected to the top casing 11, and the motor gear 43 is provided on the motor 42 and engaged with the transmission gear 44. The transmission gear 44 is disposed at the center of the propeller 3 and sleeved on the shaft 8. When the motor 42 rotates, the motor gear 43 drives the transmission gear 44 to rotate, thereby driving the shaft 8 penetrating the main body casing 1 and the propeller 3 to rotate. The motor 42 is electrically connected to the power supply 7 and the MCU main control chip respectively.

Please refer to FIG. 3. The operating principle of this embodiment is as follows: the player presses the finger pressing top bracket 21 and the finger pressing bottom bracket 22 with his fingers to fix the boomerang in his hand, and turns on a switch of the power supply 7, and the system is in a standby state. The finger rotates the boomerang, the MCU reads the rotation data of the gyroscope, and issues a command to start the driving motor 42 to rotate. The motor 42 rotates to drive the main body casing 1 to rotate. The motor 42 drives the propeller 3 to rotate through the motor gear 43 and the transmission gear 44. The main body casing 1 rotates opposite to the propeller 3, and the torque generated by the relative rotation of the main body casing 1 and the propeller 3 cancels each other out and generates wind in the same direction at the same time, so that the boomerang generates power. After the operator throws the miniature finger gyro boomerang, the gyro effect generated by the high-speed rotation of the boomerang makes it fly smoothly. The MCU main control chip will read the data sent from the gyroscope and the air pressure sensor. The MCU will fuse the relevant data to calculate the corresponding PWM. The speed of the motor is controlled by PWM output by the MCU, the PWM being pulse duty cycle.

Please refer to FIG. 3a and FIG. 3b . Arrow A indicates the action of external force, and arrow B indicates automatic rotation. When the throwing external force disappears, the boomerang automatically rotates.

This embodiment has a simple structure. The use of a single motor as a power source effectively reduces product costs. The boomerang is compact in overall structure and convenient to carry. The main body casing and the propeller cancel each other's torque and generate wind in the same direction, which can achieve automatic rotation of the boomerang in air. The player's gestures of throwing achieve different flight trajectories, thereby improving playability, simplifying control optimization, enhancing interaction, and benefitting the promotion of the boomerang.

The above embodiments are merely descriptions of the preferred embodiments, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solution of the present invention by a person skilled in the art should all fall within the protection scope determined by the claims of the present invention. 

What is claimed is:
 1. A miniature finger gyro boomerang, comprising a main body casing, a propeller being arranged in the main body casing, and a shaft is provided in the center of the propeller, characterized in that: both ends of the shaft are penetrated with a finger pressing top bracket and a finger pressing bottom bracket, the finger pressing top bracket and the finger pressing bottom bracket are respectively arranged on the top and bottom sides of the main body casing, a drive component, a main control board and a power supply are provided in the main body casing, the power supply is electrically connected to the main control board, the main control board is electrically connected to the drive component, the drive component is linked with the main body casing, and the driving motor shaft is drivingly connected with the propeller.
 2. The miniature finger gyro boomerang according to claim 1, wherein the drive component comprises a motor, a motor gear connected to a motor shaft, and a transmission gear matched with the motor gear, the upper part of the main body casing is provided with a motor house, the main control board, the power supply and the drive component are all disposed in the motor house, and a motor cover which covers the motor housing is further included.
 3. The miniature finger gyro boomerang according to claim 1, wherein the finger pressing top bracket, the finger pressing bottom bracket, the top side of the main body casing, the bottom side of the main body casing, and the propeller are assembled on the same shaft, and rotate about the shaft as a circle center during operation.
 4. The miniature finger gyro boomerang according to claim 1, wherein the longitudinal main skeleton of the main body casing is made into a propeller shape.
 5. The miniature finger gyro boomerang according to claim 4, wherein the propeller shape made by the longitudinal main skeleton of the main body casing is opposite to the propeller direction.
 6. The miniature finger gyro boomerang according to claim 1, wherein the main control board is disposed on the top side of the main body casing, and the main control board integrates an MCU main control chip, a gyroscope, and an air pressure sensor.
 7. A method for controlling the flight trajectory of a miniature finger gyro boomerang, the power supply is turned on, the main body casing is rotated, the MCU detects the angular velocity change signal sent by the gyroscope sensor, and the MCU sends a command to start the boomerang; the main body casing and the propeller rotate opposite to each other, generating wind in the same direction as the flying power of the boomerang, and at the same time, the gyro effect generated when the main body casing rotates at high speed keeps the boomerang balanced at an angle; when the boomerang is thrown at a certain angle, the boomerang first flies a distance in the direction of the throw under the effect of external force; after the throwing external force disappears, the angle of the boomerang remains unchanged due to the gyro effect of the high-speed rotation of the main body casing, and the boomerang continues to fly in the direction of this angle; that is, the operator can set the angle of the boomerang in advance to get different flight trajectories; during the flight, the MCU will automatically adjust the speed of the aircraft to maintain the stability of the flight by detecting the values of the gyroscope and the air pressure sensor; when the main body of the boomerang is impacted, the angular velocity changes, and the MCU sends a stop signal when detecting the relevant signal. 